1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Harrizon [31]
3 years ago
5

Which description accurately describes the cell membrane?

Biology
1 answer:
Alex Ar [27]3 years ago
4 0

Answer:

b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails

Explanation:

B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.

The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.

The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.

Hope this helped!

You might be interested in
Which describes a group of organisms that is considered a species?
EastWind [94]
Yeah it's definitely A.
6 0
3 years ago
Read 2 more answers
Where is glucose stored or found in the leaf?
Elis [28]
Its stored in the chloroplasts
4 0
3 years ago
Read 2 more answers
Can anyone explain in detail the process of mitosis? (Including PMAT)
Anna35 [415]

Answer:

Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.

Explanation:

Make sure to edit so your not copy-writed.

6 0
3 years ago
Aquatics science I need help
7nadin3 [17]

Answer:

Substance C

Explanation:

From the statement scenario, it is given that no water remained above substance C. This then means that substance C actually absorbed all the water above it faster than the two other substances.

Therefore, we can deduce that substance C has the greatest porosity. This means that it has the highest amount of spaces within where the water can be absorbed.

Porosity has to do with the available empty spaces which is within a material. This property allows materials or substances to absorb other substances that are absorbable.

7 0
2 years ago
Volume is defined as the amount of mass that an object has? True or false
maria [59]

Answer:

False

Explanation:

Mass and volume are two different quantities. In fact:

- Mass is a scalar quantity representing the "amount of matter" contained in a certain substance. It is measured in kilograms (kg), which is one of the 7 fundamental SI units.

- Volume is a scalar quantity representing the amount of "three-dimensional space" occupied by an object or a substance. It is measured in cubic meters (m^3).

Therefore, mass and volume are two different quantities. They are related through another quantity called density, given by:

d=\frac{m}{V}

where

m is the mass

V is the volume

So the density of a substance represents the amount of mass contained in a certain volume of the substance.

3 0
3 years ago
Other questions:
  • Lionel is replacing the kerosene in a heater. What should he avoid? A.flames B.electricity C.water D.freezing temperatures
    9·2 answers
  • Breeding stock can receive implants true or fakse
    15·2 answers
  • In the process of translation, what is used to represent a specific amino acid?
    6·2 answers
  • Scenario 1: An individual that is heterozygous for the sickle cell allele has children with an individual who is homozygous for
    9·1 answer
  • What is the temperature of the middle most layer of the Sun's atmosphere?
    9·1 answer
  • Please help grades are due today
    9·1 answer
  • Which statement describes the current theory about the relationship between the human population and mass extinction?
    15·2 answers
  • PLEASE HELP<br> WILL MARK BRAINLIEST
    12·2 answers
  • True or false<br> All living things are made up of one or more cells?
    13·2 answers
  • Identify the structure below: A , B, and C
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!